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Finding the Fourth Proportional to 520,636.28, 780,271.86 and 296,099.96

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Solution

The fourth proportional to 520,636.28, 780,271.86 and 296,099.96 is: 443,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,636.28 : 780,271.86 = 296,099.96 : x
  2. Step 2: Convert to fraction form
    520,636.28/780,271.86 = 296,099.96/x
  3. Step 3: Cross multiply
    520,636.28x = 780,271.86 × 296,099.96
  4. Step 4: Simplify right side
    520,636.28x = 231,038,466,535.13
  5. Step 5: Solve for x
    x = 231,038,466,535.13/520,636.28
  6. Step 6: Final answer
    x = 443,761.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.